MAX5014ESA+ Equivalent & Substitute Parts

Part Overview

The MAX5014ESA+ is a flyback regulator controller IC manufactured by Analog Devices Inc./Maxim Integrated, designed for positive, isolation-capable output step-up/step-down DC-DC applications. This device operates as a transistor driver with a single output phase and is housed in an 8-SOIC surface mount package.

The MAX5014ESA+ carries a "Not For New Designs" product status, indicating that Analog Devices has discontinued active development and support for this controller. Organizations requiring this functionality in new designs or seeking alternatives for existing applications should evaluate substitute parts that maintain compatibility with the core electrical and mechanical parameters.

Substiute Parts

MAX5014ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1018MAX5014ESA+ Datasheet

Current PartRFQ

MAX5014ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 1018MAX5014ESA+ Datasheet

DirectRFQ

MAX17499BAUB+

Analog Devices Inc./Maxim IntegratedIn Stock: 2283MAX17499BAUB+ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX5014ESA+ is determined by the following critical parameters:

Topology & Function: The substitute must support flyback regulation with step-up/step-down capability and positive, isolation-capable output configuration to maintain circuit compatibility.

Output Type: The substitute must function as a transistor driver to interface with external power switching elements.

Supply Voltage Range: The substitute must operate within or encompass the 13V ~ 36V supply voltage specification.

Package Compatibility: Surface mount packages with equivalent pin counts and electrical characteristics are acceptable; however, package footprint differences require PCB layout modification.

Control Features: Enable and soft start functionality must be present to maintain design control and startup behavior.

Compliance & Status: RoHS3 compliance and MSL rating must be maintained for manufacturing and environmental requirements.

The MAX17499BAUB+ qualifies as a manufacturer-recommended substitute based on shared topology support (boost/SEPIC includes step-up/step-down capability), positive isolation-capable output configuration, transistor driver output type, and equivalent compliance certifications. However, differences in package type, supply voltage range, switching frequency, and duty cycle maximum require engineering evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs Using MAX5014ESA+: The MAX5014ESA+ remains available with 932 pieces in current inventory. Continued use in production is supported; however, long-term supply continuity is not guaranteed due to "Not For New Designs" status.

For New Design Implementation: The MAX17499BAUB+ is the manufacturer-recommended alternative, carrying "Active" product status with 2200 pieces in inventory. This device provides extended operating temperature range (-40°C ~ 125°C junction temperature versus -40°C ~ 85°C ambient for MAX5014ESA+) and broader switching frequency capability (50kHz ~ 2.5MHz).

Critical Design Considerations: The MAX17499BAUB+ operates with a maximum supply voltage of 24V, which is below the 36V upper limit of the MAX5014ESA+. Applications requiring supply voltages above 24V cannot use this substitute without external voltage regulation. The package change from 8-SOIC to 10-TFSOP/10-MSOP requires PCB layout redesign. The maximum duty cycle reduction from 85% to 75% may affect output voltage regulation range in step-up/step-down configurations.

Both parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard manufacturing and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can MAX17499BAUB+ directly replace MAX5014ESA+ in existing PCB layouts?

A: No. The MAX17499BAUB+ uses a 10-pin TFSOP/MSOP package versus the 8-pin SOIC package of the MAX5014ESA+. Pin count, spacing, and footprint differ, requiring PCB redesign and re-layout. Pin function mapping must be verified against both datasheets before implementation.

Q: What is the primary reason to consider substitution?

A: The MAX5014ESA+ carries "Not For New Designs" status, indicating discontinued active development. For new applications, the MAX17499BAUB+ provides an active, supported alternative with extended temperature range and broader frequency capability.

Q: Are there supply voltage limitations with the MAX17499BAUB+?

A: Yes. The MAX17499BAUB+ operates with a maximum supply voltage of 9.5V ~ 24V, compared to 13V ~ 36V for the MAX5014ESA+. Applications requiring supply voltages above 24V cannot use this substitute without external voltage regulation or alternative controller selection.

Q: Do both parts support the same control features?

A: The MAX5014ESA+ includes Enable and Soft Start control features. The MAX17499BAUB+ includes Enable control. Soft Start functionality must be verified in the MAX17499BAUB+ datasheet for specific application requirements.

Q: What are the compliance and environmental differences?

A: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The MAX17499BAUB+ provides extended operating temperature range to 125°C junction temperature, offering improved thermal margin in high-temperature environments compared to the MAX5014ESA+ 85°C ambient specification.

Q: How do the switching frequency specifications differ?

A: The MAX5014ESA+ operates at a fixed 275kHz switching frequency. The MAX17499BAUB+ provides programmable switching frequency from 50kHz to 2.5MHz, allowing frequency optimization for specific application requirements but requiring additional design consideration for frequency selection and stability.